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EGFRvIII Immunohistochemistry Before and After Vaccination
| Before Vaccination | At Recurrence |
|---|---|
| Positive | Negative |
| Positive | Negative |
| Positive | Negative |
| Positive | Positive (< 1%) |
| Positive | Negative |
| Positive | Negative |
| Positive | Negative |
| Positive | Negative |
| Positive | Negative |
| Positive | Positive |
| Positive | Negative |
NOTE. Percent negative after vaccine is 82% (95% CI, 48% to 97%) or nine of 11; binomial test P < .001.
Abbreviation: EGFRvIII, epidermal growth factor receptor variant III.
